Just think, when it comes to Army Builders, Matty could do something that may not reduce prices that much, but would at least be a bone to fans. For example:
Order 1 Horde Trooper Pack for $50
Get 2 Horde Trooper Packs for $48 each
Get 3 Horde Trooper Packs for $47 each
Get 4 Horde Trooper Packs for $45 each
Get 5 or more for $44 each.
Put up a preorder so that the actual numbers needed for production can be locked in, and Mattel can get a discount on bulk ordering from the factory.
Other companies do things like this all the time...